Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c51926d5d55c9c524a0ff6f93c8317a4461ca13c32eaa45ebd15bbe7ac36080a' 
  AND token = 'kR+XLcOPMt9Avp4eXz+ejUBtad/9oeGFK+9OMgj2G9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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