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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25b6ceb6a48b2c82b7c4be1652c6e4feff05d9c41c558ed1e92ee28f46baeb90' 
  AND token = 'YcOn1i+mIvTp/FRSGpaz7ui/SGJVgMkpwSq18c6shxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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