Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96e48561f0265043d8239a9f94941023fa1c83b028e1e3f6fdd99e45af2ecd9c' 
  AND token = 'KOKg38WwHrr6rHEahzbVLICPBhx95AQWDwA58iEdHfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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