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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e7ff179fe68f3602c8ca25a9fb4d380bc20860a6df95e6b91dfacfdbc141406' 
  AND token = 'JL+bIK+nS9P3+ax6kO/4tq8pboR8oRAASvT0SDVUe0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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