Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a35fb67329e60d5051a13d66fe85d5b52b5b9410043531ed66b42b48c7282fba' 
  AND token = 'dNWiWPuYhXUV56TA/lwDM0c7T4Otq786CQSRqzfn9ds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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