Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae09eff48129cb3a906fb4990a698832af3fa15e9f65c36e73e2566d529a4eed' 
  AND token = '+dnxVWINHS89fZATrFx2PyX2eCyYvXhTaWQPs+Q1+kM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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