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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ece5a0dcd4ee6fc0236630db6aa63d0826323f9bbbf1b5147027a04675f5ef91' 
  AND token = 'oNOl4YpsaTOuGme6dPo2M9sNY2kUIkZRWPkHtzKbqsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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