Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d38314caa88610615193d7102d6d714f69fcfe5c90ccc734100708dcab5b4bd' 
  AND token = 'VCpIFG36D8M1rk3hd3ewCA9Jc6zrbY32HAKs/ImIx6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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