Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27c7f4debc31e4ffef724c69739c4e0bc43ce853f3398cd8907f61b610d67188' 
  AND token = 'CN5/9UDslze1JkQea83MKLpNAIvee6vzG2fpQ7nIT0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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