Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca64480d2714ee17da04fe554a6b2076ded448ac2ad1fdd01dedad1ca416cae7' 
  AND token = 'qxLQEKe/nIUqzUKd3dn7rVMCP2orvYZ7lovJ/5zskog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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