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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd004cb18f9072cd4b4e77bd2f10e237c7571af62e5ea20b8366635b7185d0c6f' 
  AND token = 'pjw225cbnTtJvBHThteEM8qTgZIza/i2LELhDwB2+v4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00113

JSON explain

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