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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00456db22354cb06956fb023513982147f1d0a2227d846f440cac46e3feaa2b1' 
  AND token = 'csGGT7K2c6U7VmA7vACo7RtmVsS2SBN7dWnw/zbPvtk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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