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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d24cf8feb8e279d4a8d8796ac8db9615bbebfbbe1aafc93ff387173c5918ec3' 
  AND token = 'CGvKj19JZyt+/hyn8EoeQ96by1ZFgpyDDqxefBXCVoI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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