Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '985c80f98a4d3f038c7fda3e7f8d7600553c55f923babb7e3f3affc054907043' 
  AND token = 'DRLM54AV2FNan5e7dIpLvgvZ4BDaT7op0QLBbsQlqe0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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