Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0686ba33bb41ef3daa1a064270a8c8178b6d1f658b5333532eaffb62753ee9fb' 
  AND token = 'A6zt+GUkYqR2C4yRHNJgd4IFXXAoN3ZjCeObdECny0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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