Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1fedaff8699334a9df13055876b272be87aabd25aa1bfb997274f6d054d6f40a' 
  AND token = 'h8AWdXkIuz6Nlm5o8hPrN2cNkaBviLMN1AdiRqgfxAI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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