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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36db9694d3e2398a7f9aab7b6a22b4cc9f4748d1cd43c1417388c7a018acb4ed' 
  AND token = 'Le7X+Mc6p22kjHI+W3IyN8O+FdNhsPFDJxA5UPMv8aY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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