Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '56a757364f4823b05a6d973fdf16890868e84a06cf32c53dcd8c8cfc80697267' 
  AND token = '/9Knc7jxu2w3J9MVW5w6epK67rptcpzv32ItAbMLqTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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