Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04c8bd3657a8f46f7256336deece76af4ceef0875902bd554870dcae0e61e9a2' 
  AND token = 'IOOepAPxquJG6wZyO4fb2qmuB5I/udlbZvCyuyG8eTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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