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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd58026e194944b821290e2182cb766bde6dc888e0a9b21459ae55cf744ab84ef' 
  AND token = 'QBnO0PgZDMwjha/jLDYjx7B2frWxHwb1Mm8x+C5T0/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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