Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbe3c8d0cbdebea479583c0d15c30730ce79be39b3d731d7efe033579a22b7ff' 
  AND token = 'A1IRohX8xyHWDDqiTel8iPSwRI7DdCwLeYmJATJ2alo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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