Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c1ff5d8ff5c69471058db10f901b3741c1720784cd807855287ae32d8351c3e' 
  AND token = 'EHjLKARLMLlHEu/mZMRtclzf1XY1PCj2n8UAbkDWRdM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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