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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41028b1a402b16b4cc98ac35dd4395481d7768a008819ef948847b83fd9484a3' 
  AND token = '43bjmnUUTL560o8ya7goBzU215flU2EOzMJhrXTDBb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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