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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb3b89a0df22b82bfb0d759058e3614a10fb480a42826993caceb94bf317b1ca' 
  AND token = 'O3D/a4SO4/HeVo6eOrvTnljjmjmL5IKOt7kFsqnf4I0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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