Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fa141a0b8b69da5836f0ced0133de5b05f27a141ce00bbb081a142897a8ede5d' 
  AND token = '/kF0Ku09zjagnOmQxFPj3qpDHU0S+W2/IelNY5vkTlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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