Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f15994028da5d07ae8c94532304705a7679fb64dcd9d8ff71b16cfe277caaf6c' 
  AND token = 'Me0REOQnfHBF4f+AKOK8mzpHWkJ7c4RI2ogrMHsyT5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00092

JSON explain

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