Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '676b4ca739a5c3257e504454747d22cf2a685102456ecb8c29a31b9247b566e0' 
  AND token = 'KfTTKdeebrh5gXZ6p72hyxNHJTlf/f+R3IJc9NAJdUg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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