Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a905fe9ed90fe0abf0182fa301153b942ef77d343883d73780962e9615d1adb' 
  AND token = 'Q/TF19jC3KftJ8jWkRmZ7PLBiTmtwx5E8X2cRe6HIpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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