Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac071aba1841ff4479408cebbd8f4a7d7d7ba528617b900649db01d982ff51d0' 
  AND token = 'mYiiPhaJraA/pK3Cy0eraZZ1pNT+Odv/RQ8zGyyOJ+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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