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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6221f04b358ad278eb06e959f11598a846babc7b2f0c3bd176623a977424f38c' 
  AND token = 'BydXVVC9FxKlMOh5c+BIggA0NXr2J8J68ot1UmnJpbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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