Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70ee0ef35a4dd79fd412442d88239510fe337380a33d51bc34312308506282b1' 
  AND token = 'RBz/M1cmW6r/WacNr8vHjdfWJFCRggtlPNb3A6SrYyc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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