Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0ce192e47a8eedce35b0609af89913ab2a38f61167e1ff36a1bcf2d63a16956c' 
  AND token = 'Vd6VyorTvfWlHwsUBy0/EO5olrt0qGy22qbH2nXqDxQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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