Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '2d4b4ab71bda7f707ed6511514059a7348e470c6e4ada958092a7db73dcf8ac2' 
  AND token = 'azviPqI35KAwiaXpkVoh45E20ljGMS6VuTDQsSVUa0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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