Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c3f9a5ddf4182910578aa70228f55766ea67186b66a4d05e57c5003635888a0' 
  AND token = 'INzEnFojGwKEQ1MoSI4jJoAiHxHgU2g9qrNryjAY+OQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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