Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bba0e5b2d30ce956c182d3fe48cfc1e2d34e5a4029ab4a433f8eb4718683b2ea' 
  AND token = 'jaNY2uS8HgHse0B491kA43yUH9BXkwezKycN7YcUm4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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