Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '876ae405cdf032faca096df2d0388d17324e399dc1c733a30d8fc96d0dfa2e10' 
  AND token = 'bJWMO6EdnKVLRzXDZkJ2K4h2tEE9TOW/Si0flYQbuDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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