Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47c64ce2aa4e6870c112e57054b7a28a402f08d56967aaa4d97992066d067d01' 
  AND token = 'I15XDiE1+8twyJqvpC7uBFJ3+IKu7iwxO0N5wi/00iQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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