Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b71cf914c00fe8b6a85d9528345d272b1e5ef7a1e5404eb34bec8b6101240184' 
  AND token = 'uOrVWD60NJkUQGPatV1rJJwNbsfcrupAHXwgOB2BWac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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