Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7497c2d1cb444db0e494353cf3d97aabdc56e61b189be6fdcddb69e2a5bb80b7' 
  AND token = 'W2tBPzEPvRIzpHm0abxB07k8Joev7sOAJVbUy4lf3+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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