Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cad372abbe370d7a8ccca3ddb9476482738e499d511cd2e47526853741bbdf02' 
  AND token = 'GBb1X/rWMey/KQrLzETpe3RGSMcubjnR4ZdHOh0KkjM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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