Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1459c66921030deb0210d6245a0b824c5149a504119dc4fba91404f016b40095' 
  AND token = 'tprGy3vubOai1fFUc+fDVk3D9k/1+8JgrcXkvli/52Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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