Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30182722a65ed8c9af0e37170ef4cf10a448d4841fedf5f3d4c432570399a7ac' 
  AND token = 'sel71Fvad6pH0EX3EeHFlv/19NhhwIbRn7b3952KcQs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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