Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '148c88ca846df8d0173b61cd6bd40643a84c296ada1fbae58b116f483f416890' 
  AND token = 'XA06GVHCztYOQ07t/mtcroY7rWnsV3ISED1lGi3v9Y0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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