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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7d6b600b1731b0f726534a41930c6cbc7c52720e7b8951e5c13e80b65ecb126' 
  AND token = '2i0YMs1GjM4dxNG2M8bthX0VqJrVMDs2u+OCTxgZlb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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