Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd9ab00ef090caa45a4ec20f198f27b29922f7108ab775806a52a734adc592d9' 
  AND token = '+x33PNSELWjoA7X1PSIpbXd6HhtZ/SoLEfctBDPz/7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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