Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06128fbba0f7625ade2a60b657b5a86d2f4bfbc53e68c0d18dc97a973b47f368' 
  AND token = 'pV/UjR08dH7d6S8mnnZgLpbZW5jTO2kjVq3uRXyEVa4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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