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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ac2f7814e3e50a890fac86db2266cf0f982a0a9cfa45cea5ea1c7e41ec81d150' 
  AND token = 'pFMsjvaIsC86pe3u96dfcjsUSGSsSb2QmgkKJRAxcLk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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