Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fcdf802f199c0be5d47286250285626f3ea73bf695b3d13b956367cc38c75c6' 
  AND token = 'D2HIazJ0P0CfDPHjxDyF+28nuVWQeaCjK8AOYzrvJWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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