Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '412fd70fd87b3b9b76dcf19de73c104ee1ba196045751415d25fc4b24dac9bd8' 
  AND token = 'fcz8XCgCt1z+X6MdJ2kG7M654pBuxJRsR/vzlvUFJ1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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