Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9073098b0ff82209ef279baa4a38a0ef1aff4830d582a1359566dd0fe147c40f' 
  AND token = 'YJ/H/ZX69CA4agA2YNYSRQ4KEpjP3lvmELfCUnhNmI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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