Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07f04e5b2d58f9b0223f23279553b1eb83d18e93d02b0bb5ad9c062b5a1589d1' 
  AND token = '7b86xFDyQqTnOph4MDUMBgvyKW0R6q0O1s3zDhtlN7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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