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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01713f868225ffa4ff65f7a2011097eba95db45544d0c87cbd501eac7992ea83' 
  AND token = 'EEYrvSb5dUrLSoHb1QPgKkte45kZ/Xjtp45vxYquCqQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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