Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd685bf913a7d407baa4b8631a1176239e60a25e9bc8a614b86b6f8c55c14cc44' 
  AND token = 'rUdeeDvsxqGaYm1W99Z494cSJotYW5uBksXCZLItSAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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