Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd7af20f44d018207dc35af543bfb1d5a1dfdd18cf202ab18b377fed0022cb61' 
  AND token = 'JcodsyRWCAlJX0FQxhbQC6glUVQYKWsCkL6JhZuKarc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00077

JSON explain

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