Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0c34edbe3f3dab0e52b15ad215e2147e5eb4df51773b9fd14f8f0449ab1ffbf' 
  AND token = '/IdF3w717+Dfintkn4ieGqFBXsKWWkgC+CaO8b8xh8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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