Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2ff5a14688c572f356c4d5dbf65fae8309edd9b8ac87bbca939842a0cb7cabe' 
  AND token = 'vllQ9t16p9HFpEDiBNrSPE5lvpqU8fr1q+/0WGzD1H4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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