Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cbc6516c6f035ad47cc37b1a13becc4dc2d2520805bd1fe2a06915e6fb76969' 
  AND token = 'do8+hMSGR+Q1j0kTBljw4R/P+w7pwkzgT2+Qj6P4htM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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