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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f4318834a888beff087a93727a69700a95fc61803ec3b68645875567ecd1d59' 
  AND token = 'vpo6nX4zQ5W3oEYX7hPJ524ITYrXn4pYF+8SMO6F110=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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