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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c13e27966b6390c1d7ef6df95a62edebb4703217c486f87db76937219ad60bdc' 
  AND token = 'FOcV4MmixaM3MIu2Fth+sYYgs1hBQ0DnVbOHaM/dmoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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