Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c8aa269bfbb7df5d70f89e0976d43685315575601960634e8354be86a9a497e6' 
  AND token = 'bSnHMGoAWHDQuhxoKC9GAYv0daG6mrTd4BN0xaR9vJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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