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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f65a06a3ec44a67805c0592594ab87ffa546fe5c52301c1e2e145c7606e3e37c' 
  AND token = '1GPlg3ibivIjBRPRWHYRpwx6EHSKc9qULx1M2V1CjK0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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