Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a562ddfccfe1cbc489763c64d64128ce533bbaf808f761810f0147a488f94be0' 
  AND token = 'mT4yEVIG9LrATdEin1/b/ENWBJaHxJM3oWBU0F3PflM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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