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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d1adfbe9a131ef5d8ef04ad0a986848d81468f88266a67fd8c5f549e34feedc' 
  AND token = 'laCjCTISQt7QVL7SsOZhflV2YTGgraDbvsGQG14fhGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}