Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4a4a298292c78b4b4513349f3248e97bf023fc721488f71db7fff456ba01f79' 
  AND token = 'lYYkdb8MUkUqw8j/0EE6BsiQC1e33NFaXF4PdVuMP18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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