Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3e3d1468d8d9092e22c0245cfa9afacb5341bc789c3c3c89571f34b1049a325' 
  AND token = '1eLhTaW6xWROuNMCvU94U/zXNFOOY9up/WrWrIGxno4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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