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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4da717f3f8e59269b7a8fe37b007303792c46b6fa42d716e40a399f79b43ae46' 
  AND token = 'xz2XBaspa1YEAXlTkoIbplOlwNp90pdSrNSJZQR4N3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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