Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '289e8cfcd53b91fb06c958763aba2fb3e93b73cbad27373af47d13f57bea70a9' 
  AND token = 'OiLPPuxJE1bB6Hl4GibsIXu2F90Tqd0JSmuGt9sGzvs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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