Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf9c07664ffe7d5554f7f86dab7a287ac0db6b09598ce897320906f746b8ed86' 
  AND token = 'p5Tl0bueuEptZv7NnETR1Bm8EsGhIVk6mTVMtMzcsJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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