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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1dd12f96070e837b6d83ddb20e139ea9af254150abd3bdfc1349fcdb063e3ae' 
  AND token = 'NY/VL2/qnpW0Y/K9WIAnkfC48GvTpfqQotoZwX/5W08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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