Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59053aec94d41501a2866f2add3c9b0bea54c9f346282667b9ba938b186f0f43' 
  AND token = 'K/94yqzuXxy4o40oSAmw+X3Nc5lOpTCKxhBVtp4olhk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}